hazel

Oct 112012
 
15sep12 015

Why Grow your own firewood?

Wood is the natural sustainable choice of fuel for many domestic fires – in use since the first fire thousands of years ago. When we warm our homes with wood, we participate in a natural cycle that we share with ancient ancestors.

The ability to burn wood for heat in our homes gives us more control and options for fuel. We are no longer dependent on large energy utilities and multinational corporations whose charges only ever increase. Even if we have to buy in our logs at least we are supporting our local economy.

Unlike the burning of fossil fuels like coal, gas or oil, burning firewood releases no more greenhouse gases (carbon dioxide) than would be produced were the wood to simply rot on the forest floor. If we are responsible in the ways we grow, cut, and burn our firewood, wood burning can actually be a good choice for the environment.

When sourcing wood you have three choices, buy in, buy a mature woodland, or grow your own.  This article will focus on the latter, check out this other article about sourcing wood away from the smallholding.

What trees are the best to grow for firewood?

Note that all woods burn better when seasoned and some burn better when split rather than as whole logs.  In general the better woods for burning that you are most likely to come by are:

  • Apple and pear – burn slowly and steadily with little flame but good heat.  The scent is also pleasing.
  • Ash – the best burning wood providing plenty of heat (will also burn green)
  • Beech and hornbeam – good when well seasoned
  • Birch – good heat and bright flame, burns quickly
  • Blackthorn and hawthorn – very good, burns slowly but with good heat
  • Cherry – also burns slowly with good heat and a pleasant scent
  • Cypress – burns well but fast when seasoned, and may spit
  • Hazel – good
  • Holly – good when well seasoned
  • Horse Chestnut – good flame and heating power but spits a lot
  • Larch – fairly good for heat but crackles and spits
  • Maple – good
  • Oak – very old dry seasoned oak is excellent, burning slowly with a good heat
  • Pine – burns well with a bright flame but crackles and spits
  • Poplar – burns very slowly with little heat
  • Willow – good if seasoned well

If the tree you are looking for is not here then try this link.

Timescale for harvesting wood as fuel

If starting from scratch then the quickest tree to plant and harvest is willow.  It can be grown on damp unusable ground, and if properly undertaken, will produce wood of a size that is manageable by a smallholder without specialist equipment.

Willow as firewood

Pros

Super fast growing varieties can produce logs up to 3 inches or more thick in only 5 years.  It is best to cut or coppice in the dormant season from late autumn to late winter.  This ensures there is the least quantity of water within the coppice poles, which reduces the time taken to season the firewood to a minimum.

To get reasonably sized logs you will have to coppice your willow every 4-5 years.  The advantage of short rotation coppicing has always been the small diameter of the trees which enabled them to be worked with hand tools.  The production of firewood is best carried out using the coppice system  because a felling licence is not required to cut coppice poles with a diameter at breast height (1.3m from the ground) of 15cm or less.

Cons

Willow wood is mostly water and takes a long time to dry out.  Some other woods will dry all on their own, simply as a function of time, but the willow dries best with good access to a breeze. Otherwise it can rot or start to grow again before it drys out.  If it sits outside and get’s rained on, it will soak up water like a sponge even if it was previously “dry”. Willow has to be kept dry- in other words, kept under cover. It should dry for a minimum of six months, but letting it dry for two to three years improves its performance slightly.

Willow is very soft wood and it burns very quickly so mix it in with your other firewood because it won’t last long.

Click here for more information on the benefits of willow, planting willow, and willow types for sale.

Coppicing trees 

Many species of tree can be coppiced (e.g. hazel). This involves regularly cutting the tree down to a stump called a stool. Multiple new shoots (known as poles) regrow from the stool. The cutting is done on cycle so to keep a consistent supply you need to plan ahead and have sets of trees which you cut each year. The interval between cutting depends on the species of tree. The trees are cut during the winter before the sap has risen, and the branches are all cut low to the ground. By repeatedly cutting the trees their lifespan can be greatly increased. One of the advantages of coppicing is that you do not need to replant the trees every time you cut.

The new growth is fairly straight and manageable, and can grow very fast. Because the wood from coppicing is relatively small it also takes less time than large logs to season and you should easily be able to season it over one summer. Coppiced firewood can be burnt in a wood stove and is ideal for use in gasification / batch boilers – these boilers have very larger fireboxes which can take long length logs. You fill up the firebox and the boiler burns the fuel transferring the heat to a heat storage or accumulator tank for use when needed.

Many types of deciduous tree can be coppiced: Alder, Ash, Beech, Birch (3-4 year cycle), Hazel (7 year cycle), Hornbeam, Oak (50 year cycle), Sycamore Sweet Chestnut (15-20 year cycle), Willow, Sweet Chestnut, Hazel (7 year cycle), and Hornbeam. 

Turning trees into firewood

Once you have harvested your wood you must split any logs that are more than 6 inches in diameter.  This increases the surface area of the wood exposed to the elements and therefore enhances drying.  You can get mechanical splitters, and attachments for a tractor, when you have large quantities to split, but they are not cheap.

For the average user or smallholder a maul is the tool needed.  It is a type of axe with a heavy wide head especially for splitting logs.  A maul does not need to be particularly sharp – unlike a narrow felling axe which slices at wood and needs to be sharpened regularly.  You can use a felling axe for splitting logs but it is much harder work than a maul.  The trick with a maul is to let the weight of the head do the work – swing the maul over your shoulder and let the head fall on to the log without forcing it down.  The wide head will force the log apart.  It’s also important to have the log you are splitting at a good height – on a tree stump or larger log about 18 inches to 2 feet off the ground is ideal – this makes the job easier and avoids back damage.

Kindling

Trees and shrubs suitable for kindling include:

  • The older wood or prunings of Buddleia
  • Gorse -as a fuel it has a high concentration of oil in its leaves and branches, and so catches fire easily and burns well, giving off a heat almost equal to that of charcoal.
  • Lilac: Thinner branches make good kindling, whilst the thicker burn well with a clear flame and a very pleasant smell.
  • Rhododendron: Old thick and tough stems burn well.


More articles on firewood can be found here


Sep 212012
 
green hazel nut

The hazel – a good smallholder tree that also produces the hazelnut

Hazel trees are part of the genus Corylus which includes nearly 20 different specimens, and most types also yield delicious nuts that can be eaten raw or cooked (more of that later).  The tree’s smooth, reddish-brown wood is also prized for its durability and elasticity.

Hazelnut Tree

Hazel is fast growing and easy to shape and therefore has a long history of use in hedging. The leaves stay with the tree much longer than most other trees, sometimes well into December.  The tree/shrub also provides habitat to numerous animals and birds, as well as serving as a source of food for animals, butterflies and insects.

 Why are hazels a good smallholder tree?

It is a good smallholder tree because it offers so many uses, as well as fitting comfortably on a smallholding. Those not familiar with forest gardening or agroforestry might not know that hazels like willows can also be used as animal fodder.
“In pastures, cows nibble on the leaves which increases the butterfat content in the milk. Sheep will readily eat the leaves, and pigs get excited if given hazel branches because they search for the crunchy nuts to eat.”
Growing hazels is also an opportunity to grow and harvest nuts at home without having to plant trees that will grow huge, and take years before they produce. Hazels grow in fertile, well drained soil. Once established, they can produce heavily and consistently.

Things to make with hazel

  • hurdles – read more here on how to make them.
  • bean poles
  • pea sticks
  • hedge stakes
  • walking sticks
  • fishing rods
  • baskets
  • tool handles
  • shepherds’ crooks
  • charcoal

 Growing or propogating hazels

Hazels can be acquired in three ways:

  • You can start new plants from hazel nuts. They tend to take some time to germinate (use a file to rub a small notch through the shell of the nut before planting), and do best when planted in pots. When germinated, let them grow to at least 6 – 12 inches before you transplant them in their final position.
  •  An easier way to propagate is by digging runners from established bushes.  Hazels spread by underground runners that develop roots. These runners can be cut away from the main plant, ( in autumn time after leaves have dropped and and the bushes have gone dormant).
  •  If all else fails there are garden centres or nurseries that sell both native, and hybrid cross hazelnut plants.

Where to plant a hazel tree?

  • Hazels need full sunlight in order to thrive.
  • Hazel trees prefer soil that is slightly acidic.

Hazel pests and diseases

Occasionally, pests, such as leaf hoppers and caterpillars will attack the hazel tree and damage its leaves and twigs.  One other insect that you may not welcome is the Hazelnut Weevil (pictured below) read here for more information.

hazelnut eating insect

Hazel trees are durable and typically don’t fall victim to epidemics.  However, there are a few diseases that the tree is particularly susceptible to, including:

  • Crown Gall – causes the formation of round wart-like galls to form on the tree’s lower branches.
  • Twig Blight – attacks the tree’s twigs; though, if left untreated, the blight will cause damage to the Hazel’s leaves and lead to premature leaf drop.
  • Powdery Mildew – appears as a white coating on the top of the leaves. In severe cases the leaves will turn yellow and drop before autumn.

What is a hazelnut?

Hazelnuts are produced by hazel trees and generally ripen in late August. The shell of a ripened hazelnut is brown, glossy, and roughly ovoid. Once shelled, the hazelnut has a bitter dark brown skin, which should be removed before cooking the nuts. The flesh of hazelnuts is white, and slightly sweet when the bitter skin is not present. The nuts can be used as a topping for soups and salads. Many cooks toast hazelnuts before using them to enhance their mild flavour. They are a good source of Vitamin E and B. Oils from the nuts are extracted and used in a number of beauty products.

How are hazelnuts created?

The catkins actually bloom in the winter, which makes the hazelnut unusual for a fruit tree. The wind carries the pollen to the female red blossoms, and then, it goes dormant until spring, when fertilization actually occurs. Shortly afterward, the nut starts to develop.

Why eat hazelnuts?

Hazelnuts are eaten raw, roasted or ground into flour. They are not only tasty, but they offer many health benefits as well, making them a delicious and nutritious snack.
 
Here are four reasons to increase your intake of these super-healthy nuts.
1. They Contain Good fats – high in omega-9 fatty acids. These healthy oils play an important role in balancing cholesterol in the body, as well as helping to lower blood pressure and offer protection against coronary heart disease and diabetes.
2. They are rich in vitamins and minerals – an excellent source of the antioxidant Vitamin E.  Hazelnuts have the highest concentration of folate among all the tree nuts and also contain calcium, magnesium and potassium.
 3. They are rich in Phytochemicals – including proanthocyanidins, quercetin, and kaempherol.
 4. They are high in protein and fibre – a good alternate protein source for those who don’t eat meat.
 

Nut allergy info

More of the light oils are present when the nuts are green or raw (unroasted) and are much more dangerous for anyone with a nut allergy.

 Hazelnut FAQs

  • Will hazelnuts keep if I pick them when them when they are still green? You can harvest and store green hazel nuts as long as you allow them to dry properly (airing cupboard, window sill etc) and will keep till Christmas. Alternatively roast them, allow to cool and store roasted nuts in zipper bags. Use within a month or freeze them.
  •  Can I forage for hazelnuts in the wild?  Yes fresh green hazelnuts are prolific in most ancient hedgerows, and are ready to eat straight from the tree, (squirrels permitting).  In this green state they are quite different from the hard, brown-shelled, Christmas nut they will eventually become.  Their flesh has the crisp crunch of overgrown peas, and a sweet vegetable taste.  However they are probably smaller than the commercially grown ones.  Most wild hazels are best eaten green as they tend to be on the smaller size, and thus shrink to next to nothing if you let them ripen.
  •  What is a Cobnut?  A cobnut is the most widely cultivated form of  hazelnut (the word filbert is also sometimes used).   Cobnuts were traditionally grown in Kent and can still be found there, as well as in Sussex, Devon and Worcestershire. Grown commercially they are bigger than wild hazels and, provided they are fresh (the leafy frill on the nut casing should not be too brown and dried out), they are very worthwhile. You may be able to buy fresh hazels from the local farm shop or grocer.
  • How do I dry green hazelnuts?  Collect the nuts and keep the good ones (those not damaged or with scabs on) leave them in a dark but ventilated place they will rippen nicely.  Only use larger ones if you are aiming to keep them until Christmas.  Here’s a link to info on how to store the unripe ones which you often have to pick early to beat the squirrels/mice/birds to.
  • Where do dried hazelnuts come from? Despite the fact that hazelnuts are grow in many different regions worldwide, the vast majority of the dried ones sold in this country come from Turkey.
  •  How to remove the skins from hazelnuts? Try roasting them in the oven at 275 degrees for 15 minutes. Then put them in a towel and rub them until the brown skin falls off. Or place the nut on a hard flat surface and place a heavy board on top,  roll the board over them and most of the husks will split. Then pull off the husk where it splits.
  • When will hazels fruit? Hazels will begin to produce nuts three to four after planting, but it may take 2-3 more years before they really take off and produce heavily.  A healthy tree can remain fruitful until well into its fortieth year of life.
  • Do I need a male and female hazel tree? Hazels have both male and female blooms on the same plant which form during the prior year and remain dormant through most of the winter. They bloom very early in the year (spring). Male (pollen producing) blooms are called catkins. Female (fruiting) blooms produce the nuts and are very small and easily overlooked. They look similar to leaf buds on branches, but they are rounder shaped with very small red threads coming out of them.

 Hazelnut recipes

Home-Made Nutella
Roast your hazelnuts.   Using a food processor, grind the hazelnuts until fine and powdery. If your food processor is strong enough, the hazelnuts will eventually turn creamy and smooth. Then add the spread sauce made from 150g Icing sugar & 50g green & blacks cocoa powder. Video link to making nutella. Recipe link for vegans.
Pesto
Whizz up some hazel nuts and garlic in a blender with some olive oil , lightly simmer for a few minutes to take the edge off the nuts and garlic, then take off the heat and add chopped basil and serve on top of pasta.

Pickling 
Select the best hazelnuts, (plump without any sign of shriveling).  If the shells of the hazelnuts are still on, look for smooth, glossy shells with no signs of cracks or holes, and shake them. The nuts should not rattle in the shell, as this indicates that they have lost moisture.  Lay the nuts out on newspaper to dry for a few days before roasting them. Add your pickling ingredients and store in an airtight container.
 
Link to recipes
 

 Hazel Folklore

Celts and Druids believed that hazelnuts were a source of wisdom and the tree itself was sacred.  In Greek mythology hazel branches were woven into headpieces and worn to protect warriors from evil.  Irish folklore states that drinking hazelnut beverages helped develop prophetic powers.
 
In Roman Britain, Hazel trees were once cultivated and became so abundant that Scotland was named Caledonia (a term derived from Cal-Dun, meaning “Hill of Hazel”) after them.
 
The nuts of the Hazel were commonly used to bring luck by stringing them together and hanging them in the house.  Such a string of nuts were often given to a new bridesmaid as a gift to wish her wisdom, wealth and good health.  When eaten the hazelnuts are said to increase fertility, and of old were eaten before divination to increase inspiration.
 
Down through the ages the Hazel has always been considered magical, and was used primarily for its powers of divination.  Hazel divining rods or dowsing rod are used to detect water and mineral veins.  Typically a divining rod has two forks off its main stem shaped like the letter “Y”.  The two forks of the rod are gripped with the fore fingers along the forks, so that the tail end of the rod points down toward the ground to begin searching.  Another method was to peel the bark of the rod and simply lay it on the palm of the hand.

websites used in the making of this article:

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